Circuit closing device



Feb. 28, 1933.

J. ANDERSON CIRCUIT CLOSING DEVICE "2 Sheets-Sheet 1 Filed Oct. 16, 1929 JUhn AndEFS DFI INVENTOR.

ATTORNEYS.

Feb. 28, 1933. .1. ANDERSON CIRCUIT CLOSING DEVICE Filed Oct. 16, 1929 2 Sheets-Sheet 2 min! I INVENTOR.

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Patented Feb. 28, 1933 UNITED STATES IOU ANDERSON, OF LAWRENCE,

CIRCUIT CLOSING DEVICE Application filed October 10, 1829. Serial No. 400,078.

The present invention relates to signals or alarms, and more particularly to a structure of this character which is of the electrical object of the present invention is to provide a circuit closing device for use in .connection with rotary cloth presses for detecting the presence of metallic particles or substances which may be carried with the cloth into the press so that a signal'or alarm will be given, the press may be stopped in operation and the metallic particles removed to prevent injury to the relatively smooth and polished surfaces of the press cylinder 5 and the jacket surrounding the cylinder.

According to the present practice, one of the final processes in finishing dress goods and mens wear fabrics consist, in nearly all of the finishing processes, in passing the cloth '20 through what is known as a rotary press.

The rotary press embodies a metal cylinder which revolves in close proximity to steam heated metal jackets and the periphe of the cylinder, and the inner surfaces 0 the jackets must be smooth and unbroken in order to satisfactorily perform the work. At the present time, considerable damage is done these rotary presses when a foreign metallic substance becomes attached to the cloth and is carried into the press. 'When this occurs, the press must be stopped, the cylinder removed and reground at considerable expense, and the regrinding operation can be performed but two or three times at most when the cyl- V inder must be discarded, and there is a resultant loss of production during this operation, which necessitates that the press lay idle for approximately a week during each regrinding operation.

It is therefore an object of the present in-' vention to eliminate this waste in time, and the relatively great expense which is incurred in regrinding and renewing the cylinders and jackets 7 It is another object of the present invention to provide a detector or alarm of this character which is of such construction that it may be readily mounted upon or in front of the press so as to receive the cloth before it enters the press, and to provide a device which will occupy but relatively small space and will in no wise interfere with the ordinary operation of the press and the carr in out of the method of treating the clot ith the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols re- 50 fer to like or corresponding parts throughout the several views,

Figure 1 is a diagrammatic view showing in side elevation a rotary cloth press with a detector of this invention applied thereto and showing a web of cloth threaded through the detector and the press.

Figure 2 is a fragmentary enlarged side elevation of the detector as applied to the forward end of the press.

Figure 3 is a further enlarged lon 'tudinal vertical section taken through t e detector. 1

Figure 4 is a transverse section taken, through the same substantially on the line 44 of Figure 3.

Figure 5 is a similar view taken on the line 5-5 of Figure 3. 4

Figure 6 is a fragmentary perspective view of the detector, showing the various parts thereof separated and in their relative positions, and

Figure 7 is a diagrammatic view of the electric circuit, showing the contact plates and a signal device incorporated therein.

Referring now to the drawings, and first to Figure l, a web of cloth 10 is taken from a roller 11 and passes over the top of a press stand 12 and is then carried beneath a tension bar 13 and through the detector; 14, the weblO passing outwardly beneath a second tension bar 15 and over a roller 16 of the press. The web 10 is carried downwardly" from the roller 16 past a rotary brush 17 for removing lint and the like from the cloth which is deposited in a pan 18 arranged beneath the rotary brush 17, and is carried downwardly and backwardly about a bottom roller 19 mounted on the press frame 20. The web 10 is then carried over and beneath a series'of rollers 21 to a stretcher roller 22, and from the roller 22 the web 10 is carried downwardly about-the ress cylinder 23 and between the same an a closely -fitting jacket 24. The web is then carried out of the press over a suitable roller-25 or the like. The detector 14 and the tension bars 13 and comprise apart of the present invention and are mounted upon a 10 pair of bracket arms 26 which are bolted or otherwise suitabl secured at 27 to the frame of the press. c bracket arms 26 extend forwardly from the press and provide a convenient means for supporting the parts. It is of course understood that the detector 14 may be otherwise mounted in front of the press so as to receive the web of cloth 10 therethrough before the cloth passes to the press cylinder.

The body portion of the detector is indicated at 14 and comprises a wood beam or bar which extends transversely across the front of the press and is bolted or otherwise suitably secured at opposite ends to the underare supported upon bolts 28. A lower contact plate 29 is seated in the upper face of the beam 14 and is of substantially the length of the face over which the web 10 passes as well as appreciable width as shown in Figures 4 and 6, and has its opposite edge portion rounded or smoothed so as to freely receive the cloth thereover without injury to cloth. This lower contact plate 29 is provided at opposite endswith insulating spacer stri s 30 whichqare seated upon the upper sur ace of the beam 14 and held in place by upwardly extending pins 31 which are threaded into the wood beam 14. 'The upper contact plate 32is of greater length than the lower contact plate 29. and overlaps and is seated upon the insulating strips 30. The upper contact plate 32 is provided at opposite ends with openings 33 adapted to freely receive the pins 31 therethrough for holding the contact plate 32 in osition and admitting of the rise and fall of the latter during the passage of the web '10 between the contact plates. The forward edge of the upper contact plate 32is curved upwardly to a slight extentas shown at 34 to present a rounded surface to the cloth as it enters between the contact plates but both contact plates 29 and .30 present large substantial faces of approximately equal area in contact with the web.

A protecting hood of electric non-conducting material, such as wood or the like, is indicated at 35 and is supported at opposite ends upon electric non-conducting blocks 36 and is adapted to extend over the contact plate. The hood 35 is provided at its forwardand rear edges with depending flan es 37 which, as best shown in Figures 4 and 5,

A project downwardly beyond the opposite 5 edge portions ofthe contact plate so as to presides of the bracket arms 26, and as shown vent operatives from coming into contact I:

with the plates.

Referring to Figure7, the contact plates 29 and 32 are adapted to be incor orated in;

an electric circuit having a suite le signal-' ply being indicated at 42. Of course any suitable circuit or arrangement of wires may be employed in order to actuate a suitable signal 38 when metallic particles journey between the contact plates 29 and 32.

.From the above, it is thought that the op-,

eration of the detector will be ap arent because when metallic particles 0 anysort whatever become lodged in the cloth 10 such particles will close the oircuit-thro h the coilitact plates 29 and 32 and actuatet e signa 38.

weaving and handling of the cloth 10 very frequently metallic articles or particles be-v come afiixed to the cloth and embedded therein and are carried into the press with the result that the surface of the press cylinder 35 f cylinder provided. The detector there or is '10 1particles are carried into the press adapted to warn the operative before these metallic by a pro 0 ed signal while in contact with the wide p ates so that the press may be stopped and the metallic 11811710185 removed 'before they damage the press.

It is of course understood that the above specifically described parts may be modified as to size and materials to best suit conditions under which they are installed, and also that the detector may be mounted independently of the press or be otherwise mounted thereon following claims- What is claimed is I 1. A detector circuit maker for cloth treating machines, comprising a transverse bar of insulating material, means for supporting the bar in front of the machine, a lower electrical conducting contact plate embedded in the bar and over which the cloth isadapted to pass in its travel to the machine, u standing pins carried by the bar at opposite ends of the lower contact plate, an upper electrical conducting contact plate having openings It has been found by experience that in the than as shown, all such changes and modifications being restricted only by the scope of thetherein adapted to freely receive said pins for supporting the upper contact plate over thelower contact plate, and insulating strips carried by the bar at opposite ends of the lower contact plate and extending above the same for spacing and insulating the upper contact plate from the lower contact plate.

2. A detector circuit maker for cloth treating machines, comprising a transverse bar, means for supporting the bar in front of the machine, a lower electrical conductin contact plate embedded in the upper sur ace of the bar and over which the cloth is adapted to pass, insulating strips arranged at opposite ends of the contact plate, pins carried by the bar and extending upwardly therefrom for holding the insulating strips in position and projecting above said insulating strips, an upper electrical conductin contact plate having openings at opposite en s adapted to receive said pins therethrough for anchoring the upper contact plate over the bar and the lower contact plate, said insulating strips extending above the lower contact plate to space the upper contact plate therefrom,blocks'arranged at opposite ends of the contact plates, and a protecting hood mounted on said blocks and extending over the plates to ward ofi operatives from contact with the plates.

3. A detector circuit maker for cloth treating machines, comprisin a transverse wood bar, a pair of brac ets a apted to be mounted on the machine and connected to opposite ends.of thebar for supporting the same, a lower electrical conduct-ing contact plate embedded in the upper surface of'the bar and over which the cloth is adapted to pass, a pair of insulating strips mounted at opposite ends of the lower contactplate andextending above the same, a pair ofpins carried by the bar at each end and extendlng upwardlythrough the insulating strips for holding the same in position, an upper electrical conducting contact plate having openings therein for the reception of said pins for yieldably supporting the upper contact plate over the'lower contact plate and out of contact therewith. blocks carried upon theopposite ends of the wood bar and extending u wardly therefrom, and an electric non-con ucting hood mounted on said blocks and extending over said plates and provided at its forward and rear edges with depending flanges adapted to house in said contact plates.

4. A detector circuit makerfor cloth treating machines, a pair of brackets adapted to besecured to the opposite sides of the frame of the machine and projecting forwardly therefrom, a transverse bar mounted on said brackets, a lower contact plate seated in the upper surface of said bar and adapted for passage of cloth thereover as the cloth is fed to the machine, anchoring and guide pins mounted upon the opposite ends of the bar and extending upwardly therefrom, insulating strips having openings therethrou h freely receiving said ins for anchoring t e strips at opposite en s of the lower contact plate, an upper contact plate having openings near its opposite ends adapted to receive said pins for anchoring and holding the upper contact plate on sai insulating strips and above said lower contact plate, and a protecting hood carried by the bar and extending longitudinally and laterally beyond the opposite edges and ends of said contact plate.

5. In a detector circuit maker for a cloth treating machine, a support member, a substantially flat elongate electrical conducting contact plate carried thereby and a secon substantially flat elongate electrical conducting contact plate mounted upon said support, spaced with its face confronting an normally insulated from said first named con tact plate, said plates having an electrical JOHN ANDERSON.

conducting contact surface in length at least 

